What They Say
We published a press release from Seoul Viosys that includes claims that that the firm can now make tiny (<1? green and blue) InGaN microLEDs that avoid the problem of sidewall damage that typically occurs when microLEDs of small (<40?m) dimensions and which reduces the EQE from around 25% to 15% or less. At 5?m or 10?m there is ‘no red emission at all’. Atomic layer deposition (ALD) is used for sidewall passivation rather than PECVD. Red chips are being made at around 70?m.
Seoul Viosys said that it would be going into mass production and prioritising supply to existing customers.
According to our principle to supply new products first to the companies that respect intellectual property rights, we will first supply the new ultra-small size 10 ?m and 30 ?m one-pixel Micro LEDs to the customers who have purchased our products (MC04, MC02, Wicop MINI, etc.) and are using them”
Two videos with extracts of a seminar have been posted on Youtube and include a five minute extract by the firm’s collaborator, Shinji Nakamura, the Nobel prize winning blue LED developer.
What We Think
One micron-sized devices are the kind of size that could enable very high volume microLED applications – once the challenges of test and mass transfer are solved, of course! (BR)
